article: In many countries, holidays are important parts in people's life. Let's show some countries to you.
  America
  American people's holidays are flexible ( ). They can use up their holidays once, and they can also use them up a few times. During the holidays, they still get money.
  Canada
  Many people in Canada can rest three days a week. They have all kinds of activities   for holidays. They may go fishing, boating or mountain climbing. Also, they have long holidays. They may go to the beach to spend a sunny winter holiday. Like American people, Canadians also get money during the holidays.
  France
  People in France are very good at enjoying life. They have a 6-week holiday every year, and they work less than 40 hours a week.
question: In which country can people work less than 40 hours a week?
options: America. Canada. France. China.